@inproceedings{3da4dd097ce54e369890dd40529716f7,
title = "A diagnostic tool for microbends in fiber termination as a source of FRD",
abstract = "Microbends in multimode optical fibers are shown to lead to focal ratio degradation which compromises fiber fed spectrograph design and performance. By propagating specific vortex mode patterns through multimode fibers containing a single controlled microbend the mechanisms for FRD can be understood. For example, we see both experimentally and through ray tracing analysis that a microbend can produce spiral patterns in the far-field. These patterns are potentially useful tools for diagnosing termination problems in fiber assemblies. For example, by analyzing the spiral patterns produced by a single microbend it is possible to determine the location of a microbend hidden in the fiber termination.",
keywords = "Focal ratio degradation, Microbends, Optical fibers, Radial velocity, Spectrographs, Termination, Vortex beams",
author = "Coutts, {David W.}",
note = "Copyright 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.; Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018 ; Conference date: 10-06-2018 Through 15-06-2018",
year = "2018",
month = jul,
day = "10",
doi = "10.1117/12.2314194",
language = "English",
isbn = "9781510619654",
series = "Proceedings of SPIE",
publisher = "SPIE",
pages = "1--8",
editor = "Ram{\'o}n Navarro and Roland Geyl",
booktitle = "Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III",
address = "United States",
}